My theory: They didn't meet Robert Duvall's demand, so, no Tom Hagen. Pacino was upset about that, and mailed in his performance. I mean he wasn't even trying to be Michael, and that alone about ruined it. I actually think the Vatican involvement was a good idea, just poorly acted and probably a poor final draft that Coppola and Puzo would have given more attention to if the environment surrounding production wasn't so disgruntled. Also, Sophia Coppola might be the worst actor ever, although she's a good director. Lost in Translation is good stuff.

"...the successful annihilation of organized crime's subculture in America would rock the 'legitimate' world's foundation, which would ultimately force fundamental social changes and redistributions of wealth and power in this country. Meyer Lansky's dream was to bond the two worlds together so that one could not survive without the other." - Dan E. Moldea